3.4 How to Tamperproof the Alarm
The battery compartment can be made tamperproof by using
the white locking rivet supplied with the screw pack as follows:
(i) Remove the battery cover as shown in figure 2.
(ii) Remove the post shown in figure 4. Place it on the corner of a
table and push gently downwards (note: cover unit with a cloth
to prevent the post flying upwards). This should leave a neat cir-
cular hole.
(iii) Put the battery cover back on the unit. Insert the white lock-
ing rivet into the hole and push fully home. See figure 4.
The battery compartment cannot now be opened unless the
rivet is removed first. This can be removed by inserting a thin
screwdriver or blade under the edge and levering it up.
3.5 Warnings
(1) Do not use the CO Alarm on an intermittent basis, or as a
portable detector for the spillage of combustion products
from fuel-burning appliances or chimneys.
(2) Do not open or tamper with the CO Alarm. There are no user
serviceable parts inside. This can damage the unit.
Button Test
It is recommended that you test your CO Alarm after installation
and then once a week to make sure the unit is working. It will
also help you and your family to become familiar with the sound
of the alarm.
Press and hold the test button until the alarm sounds (it may
take up to 5 seconds) and the green or red light flashes. The
alarm will stop sounding shortly after the button is released. If
there is a problem follow the checklist below.
Power On Indicator
Regularly check that the green power light flashes every minute
- the unit cannot work without a good battery properly con-
nected.
Low Battery Indicator
If the unit beeps and
the green light flashes simultaneously
every minute, then the three batteries are depleted and they
must be replaced. Use only the following Alkaline AA size bat-
teries: Duracell MN1500, Panasonic LR6, GP 15A, Ever Ready
LR6 or Energiser E91. Open cover as shown in figure 3. (See
section 3.4 if the locking rivet has been inserted). Insert the new
batteries with the orientation shown on the base. Button test the
alarm to check the batteries are installed correctly and that they
are not depleted. Slide back on the cover.
(The batteries will usually last over 4 years in standby under nor-
mal conditions. An undepleted battery can power a unit in alarm
for over 100 hours. The life will be reduced if the unit regularly
goes into alarm or if it is exposed to excessive temperatures for
long periods).
Amber Fault Indicator
If the unit beeps and the
amber light flashes simultaneously
every minute the self-checking circuitry may have detected a
fault. Follow the checklist to see if the unit is actually defective.
Checklist in the event of problems
Check there are three batteries installed with the correct orien-
tation in the battery compartment.
Remove one battery for 1 minute to reset the microcontroller in
the unit.
If the problem persists replace the batteries.
If none of the above solve the problem the unit is probably defec-
tive and must be replaced. See “
Getting the CO Alarm Serv-
iced
”.
Testing with Carbon Monoxide
Pressing the test button causes the unit to check for CO every 4
seconds for 3 minutes. This eliminates the long waiting normally
required e.g up to 30 minutes at 150ppm CO and up to 6 minutes
at 350ppm CO. If necessary the alarm can be tested with Car-
bon Monoxide as follows:
Carbon Monoxide is produced by smouldering cigarettes and
incense sticks. Remove the alarm and place in a large sealed
metal container (e.g. Cooking pot). Place a smouldering ciga-
rette or incense stick in the pot. Press the test button - the unit
now checks for CO every 4 seconds. Close the lid. The unit
should sense the CO within 60 seconds and give 3 loud beeps. It
then resets to normal mode. If the unit does not respond repeat
ensuring there is sufficient smouldering smoke and that it is re-
tained in the alarm by the container.
The unit can also be tested with CO by using one of the kits that
comes with CO either in a glass or aerosol can. Follow the in-
structions on the kit but be sure to press the test button to speed
up the CO sampling before you expose the unit to the CO. When
it senses the CO it should give 3 beeps. It then resets to normal
mode.
How to distinguish between CO Alarm and Smoke
Alarm warnings
The CO Alarm has a distinctive on-off sound of 3 pulses, fol-
lowed by a pause as compared with a typical Smoke Alarm
which has a rapid pulsing sound.
In addition, when your CO Alarm detects CO the red light will be
flashing.
Testing both your CO Alarm and Smoke Alarms weekly will help
you and your family to clearly distinguish between them in an
emergency.
Clean the outside case by occasionally wiping with a clean
damp cloth. Do
not
use any cleaning agents, bleaches, deter-
gents or polishes,
including
those in aerosol cans. Avoid spray-
ing air freshners, hair spray, paint or other aerosols near the CO
Alarm. Do not place air fresheners near the unit.
Use the narrow nozzle of a vacuum cleaner to remove fluff and
other contamination from the cover slots to ensure CO gas can
reach the sensor.
Caution: Do not paint the CO Alarm.
Remove the CO Alarm when decorating. Do not allow water or
dust to comtaminate the alarm.
5.
Maintaining Your CO Alarm
10
8
9
Testing & Monitoring your CO Alarm
4.
PUSH
OUTWARDS
POST
Figure 3
LOCKING
RIVET
Figure 4
PRESS HERE
FIRST AND
SLIDE UP
MOUNTING
HOLES
+
+
+
-
-
-
Figure 2
